ok, no worries, The thanks for trying rating is a negative rating that takes away from my rating for the work I do here. Really hurts when you get one... Thanks for upgrading that. I really appreciate it.

robotekok, no worries, The thanks for trying rating is a negative rating that takes away from my rating for the work I do here. Really hurts when you get one... Thanks for upgrading that. I really appreciate it.

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This was answered on http://www.fixya.com/support/t4989381-kdc_mp728_car_stereo_dont_know

To the right of the six preset buttons on the face of the unit is a
small small concave reset button. Push this to reset the entire unit.
You will lose all your setting and the protection code will also be
reset. The factory default is not to use the security code, but I
recommend setting it to something you remember because this happens
often enough on Kenwoods.

Type 1 During the code request mode, while holding the DISP key depressed, press and hold the Volume UP or DOWN key for 3 seconds (so that “…” disappears). Then using your remote enter your code.

Type 2 Press the "Auto" button and "Track up" on face of radio at the same time. The four dash lines ( . . . . ) should "disappear".

Then using your remote enter your code.

Type 3 Model# DPX-4020 and DPX-4030 Press and hold the 1 then the 6 preset key (preset keys are the buttons on face of radio for storing you "favorite" radio stations). "C" should display. Then using your remote, enter your code.

Enter your number from the remote control unit. Your code number is 5227 (KCAR)

To the right of the six preset buttons on the face of the unit is a small small concave reset button. Push this to reset the entire unit. You will lose all your setting and the protection code will also be reset. The factory default is not to use the security code, but I recommend setting it to something you remember because this happens often enough on Kenwoods.

If you dont have an MP3 or Ipod input, then the best way is to buy an FM transmitter. This device plugs into your cigarette lighter and when connected to the Ipod will transmit the signal to the stereo unit. this device is actually like a micro radio station that you have to tune in on the Kenwood. These units are available at Wal-Mart, K-Mart, or online at Ebay, and Amazon.

Sure I remember you... hard to forget a kiss(specially in here :) It is the "next track" button referred to, and you need to hold it down for 3 seconds or so on some models to get the process to work. Try that and see how you get on. It should solve the problem for you. I know this process works because I have used it many times before. Let me know how youy get on, and I will get back to you a bit sooner next time. Cheers

Oh bugger.... looks like I miss out on that kiss :( You DO need the remote to clear the code. There is no reset button on the unit to bypass this either unfortunately. What I can suggest you do is to go to a kenwood agent or car audio installer and sweet talk them into entering the reset code for you. They often have a remote or can get one of of the box to help you out. You can find a procedure on how to do it here. Sorry this is your only choice. I used to do it in the workshop on radios I was repairing, and sometimes they would have the problem after they reinstalled it, so I used to do it for people for free. You could perhaps get yourself a replacement remote to go with the unit, I suggest ordering it from the same guys that perhaps reset the code for you. It is worth having a remote. Much easier to work the unit whilst driving with the remote.. Again, sorry this isn't what you wanted to hear. Please don't down rate me for being the bearer of bad news.